<p>degree of acidity? do u remember the question?</p>
<p>it was 1 atm to 0.75 atm so no change in volume.</p>
<p>is that the question taht says how is teh degree of acidity measured? that'd be indicator.</p>
<p>in that case, how is there not a change in volume? sorry, i dont remember the problem, so i forgot what i put. </p>
<p>PV/t...
(1atm)(V) / (200k) = (.75atm)(V)/(100k)</p>
<p>What about raising the surface area of something was that TT CE . it was like something about iron and about surface area.</p>
<p>err.. maybe it was the opposite? i redid this problem 3 times to check my math.</p>
<p>oh wait... maybe it was 1.50 atm.</p>
<p>it said iron mesh rusts faster than iron block of the same mass. iron mesh has greater surface area. so it was TTCE.</p>
<p>^No, that problem was 1atm and 200K going to .75atm and 100K.</p>
<p>so how can the volume stay the same?</p>
<p>i'm pretty sure the starting pressure was 1.5atm
Edit: actually, i'm not sure anymore, i spent too much of my memory remembering physics questions</p>
<p>no, it was
1atm & 200k
going to
.5 atm & 100k</p>
<p>actually i have no freakin clue. i think i'm just gonna cancel this one;
this is what a year without chemistry does to you;
probably break 700s if i'm lucky.</p>
<p>& my first score was a 780 too :(</p>
<p>I suck at Chemistry, so I predict about 650. Most of the stuff on the test wasn't even covered in my class. Blah.</p>
<p>I think it's pV/ T =pV/T</p>
<p>pressure goes from 1 to 2 atm
temperature is halved</p>
<p>When pressure doubles, v goes from v to 2v
When temperature is halved 2v goes to 1v</p>
<p>therefore there is no change</p>
<p>Is there anyway you could cancel the test? I filled in all of them even the ones I'm unsure about and I found out the more wrong filled in you have you get deduced 1/4 !!! I totally forgot about that, that's what happens when you're sick so now I know I did bad!!!</p>
<p>Guys what about the surface area about iron. Was it t/t/ce.?</p>
<p>isnt limestone caco3 and limewater caoh2?</p>
<p>yeah I put TT, CE... anyone know the corect answer?</p>
<p>ya it was tt ce</p>
<p>Well first off, I would like to thank each and every person of this forum thread. You have all made me feel much more relieved about my answers.</p>
<p>And yes I believe that question was T T CE
But does anyone remember the question on CH3-CH2-CH3 and CH3-CH-CH3 being isomers (I know I probably wrote that wrong, feel free to correct me) What did people get for that, i remember F/T because the formula was different, but the second column was right</p>
<p>The formula being different is what an isomer is, I got TTCE</p>
<p>Thanks... And i have another question
What was that question with spectator ions
I think I wrote Cl- and Na+</p>
<p>yeah, it was Cl- and Na+</p>